DE59004078D1 - Device and method for determining the particle size distribution and the total concentration of particles in a gas, in particular in air. - Google Patents

Device and method for determining the particle size distribution and the total concentration of particles in a gas, in particular in air.

Info

Publication number
DE59004078D1
DE59004078D1 DE90106031T DE59004078T DE59004078D1 DE 59004078 D1 DE59004078 D1 DE 59004078D1 DE 90106031 T DE90106031 T DE 90106031T DE 59004078 T DE59004078 T DE 59004078T DE 59004078 D1 DE59004078 D1 DE 59004078D1
Authority
DE
Germany
Prior art keywords
particles
determining
gas
air
particle size
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE90106031T
Other languages
German (de)
Inventor
Claus-Wolfgang Sauer
Hans-Juergen Grimm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GRIMM LABORTECHNIK
Original Assignee
GRIMM LABORTECHNIK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GRIMM LABORTECHNIK filed Critical GRIMM LABORTECHNIK
Application granted granted Critical
Publication of DE59004078D1 publication Critical patent/DE59004078D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/02—Investigating particle size or size distribution
    • G01N15/0205—Investigating particle size or size distribution by optical means, e.g. by light scattering, diffraction, holography or imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • G01J2001/444—Compensating; Calibrating, e.g. dark current, temperature drift, noise reduction or baseline correction; Adjusting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N2015/0042—Investigating dispersion of solids
    • G01N2015/0046—Investigating dispersion of solids in gas, e.g. smoke
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Electro-optical investigation, e.g. flow cytometers
    • G01N2015/1486—Counting the particles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N2021/4704—Angular selective
    • G01N2021/4726—Detecting scatter at 90°
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
DE90106031T 1989-04-07 1990-03-29 Device and method for determining the particle size distribution and the total concentration of particles in a gas, in particular in air. Expired - Fee Related DE59004078D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3911419 1989-04-07

Publications (1)

Publication Number Publication Date
DE59004078D1 true DE59004078D1 (en) 1994-02-17

Family

ID=6378159

Family Applications (1)

Application Number Title Priority Date Filing Date
DE90106031T Expired - Fee Related DE59004078D1 (en) 1989-04-07 1990-03-29 Device and method for determining the particle size distribution and the total concentration of particles in a gas, in particular in air.

Country Status (2)

Country Link
EP (1) EP0391256B1 (en)
DE (1) DE59004078D1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2722362B2 (en) * 1992-03-27 1998-03-04 三井金属鉱業株式会社 Method and apparatus for measuring particle or defect size information
DE19859211C2 (en) * 1998-12-21 2001-04-26 Grimm Aerosol Technik Gmbh & C Device and method for determining the particle size distribution and the total concentration of particles in a sample gas stream
DE10030134B4 (en) * 2000-06-20 2004-01-08 Grimm Aerosol Technik Gmbh & Co. Kg Device and method for determining a concentration of microorganisms in a gas
US7932490B2 (en) 2007-08-07 2011-04-26 Tsi, Inc. Size segregated aerosol mass concentration measurement device
US8047055B2 (en) 2007-08-08 2011-11-01 Tsi, Incorporated Size segregated aerosol mass concentration measurement with inlet conditioners and multiple detectors
PL3521810T3 (en) 2018-01-31 2020-05-18 Sick Engineering Gmbh Analyser for the determination of fine dust
CN113804606A (en) * 2021-08-26 2021-12-17 之江实验室 Suspended light trap nanoparticle quality measurement method based on electric field calibration

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2997597A (en) * 1959-08-11 1961-08-22 Victor R Mumma Apparatus for measuring particle sizes in an aerosol
GB2022816B (en) * 1978-06-09 1982-12-22 Grachev K A Instrument for measuring the sizes and quantity of particles in a fluid medium
JPH063413B2 (en) * 1986-06-06 1994-01-12 興和株式会社 Particle measuring device in fluid
US4842406A (en) * 1988-01-15 1989-06-27 Pacific Scientific Company Optical instruments for measuring particle sizes

Also Published As

Publication number Publication date
EP0391256A3 (en) 1990-11-28
EP0391256B1 (en) 1994-01-05
EP0391256A2 (en) 1990-10-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee
8370 Indication of lapse of patent is to be deleted
8339 Ceased/non-payment of the annual fee